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Xocolatlite

A valid IMA mineral species
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06685160017272471761601.jpg
Xocolatlite

Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico
03077520017272471779333.jpg
Xocolatlite

Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico
06085040017272471771824.jpg
Xocolatlite

Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico
00398210017272005516656.jpg
Xocolatlite

Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico
03077520017272471779333.jpg
Xocolatlite

Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico
06085040017272471771824.jpg
Xocolatlite

Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico
00398210017272005516656.jpg
Xocolatlite

Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico
03077520017272471779333.jpg
Xocolatlite

Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico
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About XocolatliteHide

Formula:
Ca2Mn4+2(Te6+O6)2 · H2O
Colour:
Chocolate-brown (RAL 8017)
Lustre:
Vitreous
Hardness:
2 - 3
Specific Gravity:
4.70 (Calculated)
Crystal System:
Monoclinic
Name:
Derived from the Nahuatl word 'xocolatl' or 'xocoatl', meaning 'bitter water', and is the root for 'chocolate', in reference to the mineral's chocolate-brown color, and the Mexican type-locality.
Probably related to kuranakhite.


Unique IdentifiersHide

Mindat ID:
38843
Long-form identifier:
mindat:1:1:38843:6

IMA Classification of XocolatliteHide

Classification of XocolatliteHide

Strunz-mindat (2026):
7.CC.85

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
C : With medium-sized and large cations

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
XocIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of XocolatliteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of XocolatliteHide

Lustre:
Vitreous
Transparency:
Transparent
Colour:
Chocolate-brown (RAL 8017)
Streak:
Copper-brown (RAL 8004)
Hardness:
2 - 3 on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
Perfect
mica-like
Fracture:
Conchoidal
Density:
4.70 g/cm3 (Calculated)

Chemistry of XocolatliteHide

Mindat Formula:
Ca2Mn4+2(Te6+O6)2 · H2O
Element Weights:
Element% weight
Te38.948 %
O31.743 %
Mn16.769 %
Ca12.233 %
H0.308 %

Calculated from ideal end-member formula.
Te
O
Mn
Ca
H
Elements listed:
Ca, H, Mn, O, Te - search for minerals with similar chemistry

Crystallography of XocolatliteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/c
Cell Parameters:
a = 10.757(3) Å, b = 4.928(3) Å, c = 8.492(2) Å
β = 102.39(3)°
Ratio:
a:b:c = 2.183 : 1 : 1.723
Unit Cell V:
463 ų
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.267 Å(100)
2.52 Å(71)
4.361 Å(51)
1.762 Å(39)
4.924 Å(34)
2.244 Å(32)
1.455 Å(24)
1.996 Å(21)
1.565 Å(20)
2.353 Å(18)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47e : [Vanadates, chromates, manganates]
47h : [Near-surface oxidized, dehydrated minerals]

Type Occurrence of XocolatliteHide

Synonyms of XocolatliteHide

Other Language Names for XocolatliteHide

Common AssociatesHide

Associations Based on Photo Data:
6 photos of Xocolatlite associated with QuartzSiO2
6 photos of Xocolatlite associated with DagenaisiteZn3Te6+O6
3 photos of Xocolatlite associated with TelluriteTeO2
3 photos of Xocolatlite associated with CarlfriesiteCaTe4+2Te6+O8
2 photos of Xocolatlite associated with AndymcdonalditeFe2TeO6
1 photo of Xocolatlite associated with BaryteBaSO4
1 photo of Xocolatlite associated with LeisingiteCu2MgTe6+O6 · 6H2O
1 photo of Xocolatlite associated with Eurekadumpite(Cu,Zn)16(TeO3)2(AsO4)3Cl(OH)18 · 7H2O

Related Minerals - Strunz-mindat GroupingHide

7.CC.CobaltoblöditeNa2Co(SO4)2 · 4H2OMon. 2/m : P21/c
7.CC.AndychristyitePbCu2+Te6+O5(H2O)Tric. 1 : P1
7.CC.Ammoniovoltaite(NH4)2Fe2+5Fe3+3Al(SO4)12(H2O)18Iso. m3m(4/m32/m) : Fd3c
7.CC.05KrausiteKFe(SO4)2 · H2OMon. 2/m : P21/m
7.CC.10TamarugiteNaAl(SO4)2 · 6H2OMon. 2/m : P21/c
7.CC.15MendoziteNaAl(SO4)2 · 11H2OMon. 2/m : B2/b
7.CC.15KaliniteKAl(SO4)2 · 11H2OMon. 2/m : B2/b
7.CC.20Alum-(Na)NaAl(SO4)2 · 12H2OIso. m3(2/m3) : Pa3
7.CC.20Lonecreekite(NH4)Fe3+(SO4)2 · 12H2OIso. m3(2/m3) : Pa3
7.CC.20Alum-(K)KAl(SO4)2 · 12H2OIso. m3(2/m3) : Pa3
7.CC.20Tschermigite(NH4)Al(SO4)2 · 12H2OIso. m3(2/m3) : Pa3
7.CC.20LanmuchangiteTl+Al(SO4)2 · 12H2OIso. m3(2/m3) : Pa3
7.CC.25ZincovoltaiteK2Zn5Fe3+3Al(SO4)12 · 18H2OIso. m3m(4/m32/m) : Fd3c
7.CC.25VoltaiteK2Fe2+5Fe3+3Al(SO4)12 · 18H2OIso. m3m(4/m32/m) : Fd3c
7.CC.25MagnesiovoltaiteK2Mg5Fe3+3Al(SO4)12 · 18H2OIso. m3m(4/m32/m) : Fd3c
7.CC.25PertlikiteK2(Fe2+,Mg)2(Mg,Fe3+)4Fe3+2Al(SO4)12 · 18H2OTet. 4/mmm(4/m2/m2/m) : I41/acd
7.CC.25Ammoniomagnesiovoltaite(NH4)2Mg2+5Fe3+3Al(SO4)12 · 18H2OIso. m3m(4/m32/m) : Fd3c
7.CC.30KröhnkiteNa2Cu(SO4)2 · 2H2OMon. 2/m : P21/c
7.CC.35FerrinatriteNa3Fe(SO4)3 · 3H2OTrig. 3 : P3
7.CC.40GoldichiteKFe(SO4)2 · 4H2OMon. 2/m : P21/c
7.CC.45LöweiteNa12Mg7(SO4)13 · 15H2OTrig. 3 : R3
7.CC.50NickelblöditeNa2Ni(SO4)2 · 4H2OMon. 2/m : P21/c
7.CC.50BlöditeNa2Mg(SO4)2 · 4H2OMon. 2/m : P21/c
7.CC.50ChangoiteNa2Zn(SO4)2 · 4H2OMon. 2/m : P21/c
7.CC.55LeoniteK2Mg(SO4)2 · 4H2OMon. 2/m : B2/m
7.CC.55MereiteriteK2Fe(SO4)2 · 4H2OMon. 2/m : B2/m
7.CC.60NickelpicromeriteK2Ni(SO4)2 · 6H2OMon. 2/m : P21/c
7.CC.60Nickelboussingaultite(NH4)2Ni(SO4)2 · 6H2OMon. 2/m : P21/c
7.CC.60Katerinopoulosite(NH4)2Zn(SO4)2 · 6H2OMon. 2/m : P21/c
7.CC.60PicromeriteK2Mg(SO4)2 · 6H2OMon. 2/m : P2/b
7.CC.60CyanochroiteK2Cu(SO4)2 · 6H2OMon. 2/m : P21/c
7.CC.60Mohrite(NH4)2Fe(SO4)2 · 6H2OMon. 2/m : P21/c
7.CC.60Boussingaultite(NH4)2Mg(SO4)2 · 6H2OMon. 2/m : P21/c
7.CC.65PolyhaliteK2Ca2Mg(SO4)4 · 2H2OTric. 1
7.CC.70LeightoniteK2Ca2Cu(SO4)4 · 2H2OMon. 2/m : B2/b
7.CC.75AmarilliteNaFe(SO4)2 · 6H2OMon. 2/m : B2/b
7.CC.80KonyaiteNa2Mg(SO4)2 · 5H2OMon. 2/m : P21/c
7.CC.85WattevilleiteNa2Ca(SO4)2 · 4H2O (?)Orth.
7.CC.90Eckhardite(Ca,Pb)Cu2+Te6+O5(H2O)Mon. 2/m

Fluorescence of XocolatliteHide

In UV light:
None observed

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for XocolatliteHide

References for XocolatliteHide

Localities for XocolatliteHide

Showing 6 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Italy
 
  • Liguria
    • Genoa
      • Ne
        • Reppia
M.E. Ciriotti personal communication
Mexico (TL)
 
  • Sonora
    • Moctezuma Municipality
      • Moctezuma
Grundler et al. (2008)
USA
 
  • Nevada
    • Lincoln County
      • Delamar Mining District
        • Delamar Mine
Kampf et al. (2022)
  • Utah
    • East Tintic Mountains
      • Tintic Mining District
        • Mammoth
          • North Star Mine (Star Consolidated Mine)
EDS and Raman analyzed by Joy Desor.
    • Juab County
      • Detroit Mining District
MarekC collection 2019
Coolbaugh et al. (2020)
Quick NavTopAbout XocolatliteUnique IdentifiersIMA Classification Classification Mineral SymbolsPronunciation Physical Properties Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
 
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